CROSLEY RADIO Corp
CROSLEY RAActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2138664A | Compressor and lubricating means | Expired / Lapsed | 1937-01-21 | 1938-11-29 | 0 | Details |
| US2123418A | Helmet for therapeutic scalp treatments | Expired / Lapsed | 1936-05-16 | 1938-07-12 | 0 | Details |
| US2069328A | Loudspeaker installation for automotive radio sets | Expired / Lapsed | 1935-07-24 | 1937-02-02 | 0 | Details |
| US1978008A | Volume control method for radioreceivers | Expired / Lapsed | 1929-10-26 | 1934-10-23 | 0 | Details |
| US1939898A | Loud speaker construction | Expired / Lapsed | 1930-11-14 | 1933-12-19 | 0 | Details |
| US1939902A | Nonlinear variable resistance element | Expired / Lapsed | 1928-08-06 | 1933-12-19 | 0 | Details |
| US1920150A | Direct-current voltage transformation apparatus | Expired / Lapsed | 1932-12-07 | 1933-07-25 | 0 | Details |